CN115156401A

CN115156401A - Metal gasket stamping forming equipment for fastener

Info

Publication number: CN115156401A
Application number: CN202211094174.XA
Authority: CN
Inventors: 戚小乐
Original assignee: Xuzhou Hengqian Fastener Manufacturing Co ltd
Current assignee: Xuzhou Hengqian Fastener Manufacturing Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-10-11
Anticipated expiration: 2042-09-08
Also published as: CN115156401B

Abstract

The invention relates to the technical field of metal hardware fitting processing, and particularly provides a metal gasket stamping and forming device for a fastener; the forming device comprises a forming workbench, wherein a rectangular female die window is arranged on the surface of the forming workbench; the bottom end of the table top of the forming workbench is provided with a lower die device and a material guiding and returning mechanism which is matched and assembled with the lower die device; the upper end of the table top of the forming workbench is provided with a forming transposition mechanism, and a male die blanking device and a flanging die pressing device are assembled on the forming transposition mechanism; and the forming workbench is provided with two first flanging die assemblies and two second flanging die assemblies which are matched with the flanging die assembly. The equipment of the invention changes the traditional step-by-step forming mode of combining a plurality of single-process dies, can realize continuous processing and forming in a phase-changing manner, greatly improves the processing and forming efficiency, and avoids the trouble of transferring and conveying processed parts among a plurality of single-process dies in the traditional way.

Description

Metal gasket stamping forming equipment for fastener

Technical Field

The invention relates to the technical field of metal hardware fitting machining, and particularly provides metal gasket stamping and forming equipment for a fastener.

Background

A fastener is a mechanical element that can mechanically secure or bond two or more elements together. Metal washers for fasteners are mechanical elements used in cooperation with fasteners to improve mechanical sealing or fastening connection strength. Like the fasteners, the shims are also classified as standard shims or non-standard shims, with standard shims referring to shims that generally have a standard shape or configuration and non-standard shims referring to shims that generally have a non-standard shape or have a three-dimensional configuration.

As shown in fig. 13, a nonstandard metal gasket with a three-dimensional structure is provided, the center of the metal gasket is a circular hole for a fastening member such as a bolt to pass through, and the periphery of the metal gasket is a bent edge structure formed by bending, in the actual process of forming, the metal gasket is generally manufactured by stamping in a rapid batch manner, for a standard metal gasket or a gasket with a planar structure, a continuous forming die is usually used for continuous process forming, for some gaskets with a three-dimensional structure and not suitable for continuous forming, a plurality of single-process dies are usually used for single batch forming of multiple processes, for the gasket shown in fig. 13, a single-process die is suitable for process forming, in the process of forming, punching of the circular hole and peripheral trimming need to be completed, and then bending and shaping of the peripheral bent edge need to be completed, in the conventional single-process, a semi-finished product needs to be transferred from the single-process die to the single-process die of another process for reprocessing after each process is completed, so that in the process forming of each gasket part, switching operation in the single-process of each process die is needed, and troublesome, and the operation is relatively time is not beneficial for achieving rapid process forming.

Disclosure of Invention

In order to solve the above problems, the present invention provides a metal gasket press working apparatus for a fastener, which is used to solve the above problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme to achieve the purpose: a metal gasket stamping and forming device for fasteners comprises a forming workbench, wherein a rectangular female die window is arranged on the surface of the forming workbench, and the edge of the upper end of the female die window is a trimming knife edge; the bottom end of the table top of the forming workbench is provided with a lower die device and a material guiding and returning mechanism which is matched and assembled with the lower die device; the upper end of the table top of the forming workbench is provided with a forming transposition mechanism, and a male die blanking device and a flanging die pressing device are assembled on the forming transposition mechanism; the forming workbench is provided with two first flanging die assemblies and two second flanging die assemblies which are matched with the flanging die assembly, the first flanging die assemblies are arranged in the female die window in a one-to-one correspondence manner, the window edges at two opposite positions are arranged symmetrically, and the second flanging die assemblies are arranged in the female die window in a one-to-one correspondence manner, the window edges at the other two opposite positions are arranged symmetrically.

The lower die device comprises a lower die lifting assembly assembled below the table top of the forming workbench, a lower module is horizontally and fixedly installed at the lifting end of the lower die lifting assembly, the lower module is matched with the female die window, and the lower module can penetrate upwards through the female die window under the lifting of the lower die lifting assembly; lower module is including being the rectangle structure and relative the central module that the die window set between two parties, central module wherein two lateral wall ends are provided with the side module relatively, two other lateral wall ends of central module are provided with the side module relatively No. two, a side module and the equal vertical slidable mounting of inlaying of side module No. two is in the central module, the lifting end of lower mould lifting subassembly still is equipped with the drive side module and the gliding side module lifting subassembly of synchronous lift of side module No. two, works as the side module lifting subassembly drives a side module and when No. two side modules rose to the highest position, the up end of a side module and the up end of No. two side modules all with the up end of central module flushes.

The forming transposition mechanism comprises a transposition moving frame which moves along a horizontal straight line, and the male die blanking device and the flanging die pressing device are both assembled on the transposition moving frame; the transposition moving frame drives the male die blanking device and the flanging die pressing device to synchronously move and transpose, so that the male die blanking device or the flanging die pressing device is vertically aligned with the lower module.

Preferably, the punch blanking device comprises a stamping cylinder vertically fixed at the top end of the transposition moving frame, the output end of the stamping cylinder is horizontally and fixedly provided with a die seat plate, the bottom end face of the die seat plate is fixedly provided with a round hole punch and four trimming punches, and the four trimming punches surround the round hole punch and are distributed in a rectangular peak; the die holder plate is vertically and slidably matched with a plurality of vertical guide pillars, a material pressing window plate is horizontally and fixedly mounted between the bottom ends of the vertical guide pillars, a plurality of L-shaped hanging plates are fixedly mounted on the material pressing window plate in an inverted mode, the horizontal plate part of each hanging plate is in suspension contact with the top end face of the die holder plate, a buffer spring is sleeved on each vertical guide pillar, and two ends of each buffer spring are respectively in contact with the bottom end face of the die holder plate and the upper end face of the material pressing window plate; a circular hole female die is correspondingly matched with the circular hole male die on the central module; the lower module and the female die window together form four trimming female dies which are arranged in one-to-one correspondence with the four trimming male dies; when the upper end face of the lower module is flush with the upper end face of the forming workbench table face, the four trimming female dies are distributed at the positions of four through holes formed by surrounding the central module, the first side module, the second side module and the female die window in a one-to-one correspondence manner.

Preferably, the flanging die assembly comprises a lower air cylinder vertically and fixedly mounted at the top end of the transposition moving frame, an upper supporting plate is horizontally and fixedly mounted at the output end of the lower air cylinder, a plurality of supporting and hanging guide pillars are vertically and slidably mounted on the upper supporting plate, a circular hanging edge in contact with the upper end face of the upper supporting plate is arranged on each supporting and hanging guide pillar, a flanging die block is horizontally and fixedly mounted between the bottoms of the supporting and hanging guide pillars jointly, a withdrawing spring is sleeved on each supporting and hanging guide pillar, two ends of each withdrawing spring are in contact with the bottom end face of the upper supporting plate and the upper end face of the flanging die block respectively, and a positioning convex circle is arranged at the bottom end of the flanging die block.

Preferably, the lower die lifting assembly comprises a plurality of lifting cylinders vertically fixed below the table top of the forming workbench, a lifting plate is fixedly mounted between output ends of the plurality of lifting cylinders, a plurality of die supporting vertical plates are arranged at the top end of the lifting plate, and the bottom end of the central module is horizontally and fixedly mounted at top ends of the plurality of die supporting vertical plates; the side die lifting assembly comprises a withdrawing cylinder and a cross plate, wherein the withdrawing cylinder is vertically and fixedly arranged at the bottom end of the lifting plate, the cross plate is horizontally fixed at the output end of the withdrawing cylinder, and the bottom end of the first side module and the bottom end of the second side module are fixedly connected to the cross plate.

Preferably, the material guiding and returning mechanism comprises a material guiding frame fixedly arranged at the bottom end of the table top of the forming workbench and used for guiding and positioning the feeding of the material sheets; the material guide frame is positioned right below the female die window, and the lower module can penetrate through the material guide frame upwards; the material guiding and returning mechanism further comprises a material returning assembly which is assembled at the bottom end of the table top of the forming workbench and used for enabling the machined and formed metal gasket to return.

Preferably, the material guiding frame comprises two side edge barriers fixedly connected to the bottom end of the forming workbench platform and arranged in a one-to-one correspondence manner along two window edges at two opposite positions of the cavity die window, a positioning edge barrier is fixedly connected between the two side edge barriers, the positioning edge barrier is aligned with one of the window edges adjacent to the two side edge barriers on the cavity die window, an alignment flat plate is horizontally and fixedly connected between the bottom ends of the two side edge barriers, and the two side edge barriers, the positioning edge barriers and the alignment flat plate enclose a position avoiding window for lifting and avoiding the lower die block; when the lower module is at the lowest position, the upper end surface of the lower module is flush with the inner end surface of the alignment flat plate.

Preferably, the material returning assembly comprises a material returning cylinder horizontally fixed at the bottom end of the table top of the forming workbench and a material returning plate fixedly connected to the output end of the material returning cylinder; and a hole is reserved between the two side edge retaining strips and the positioning edge retaining strip as well as between the two side edge retaining strips and the bottom end of the table top of the forming workbench, and when the material returning cylinder horizontally pushes the material returning plate, the material returning plate horizontally penetrates through the hole along the length direction of the side edge retaining strips.

Preferably, the first flanging die assembly comprises a first flanging die which is arranged along the extending direction of two opposite window edges of the female die window in a driving manner; the second flanging die assembly comprises a second flanging die which is arranged along the extending direction of the other two opposite window edges of the female die window in a driving manner; the edge folding pressing module is of a cubic structure, the two first edge folding dies and the edge folding pressing module are correspondingly arranged at two opposite side wall ends one by one, and the two second edge folding dies and the other two opposite side wall ends of the edge folding pressing module are correspondingly arranged at the other two opposite side wall ends one by one.

The technical scheme has the following advantages or beneficial effects: 1. the invention provides a metal gasket stamping forming device for fasteners, which changes the traditional step forming mode of combining a plurality of single-process dies, designs the deformation of a lower die device into a design form capable of carrying out structural deformation according to the processing process, and converts a male die blanking device and a flanging die pressing device which are matched with the lower die device for forming into a mode capable of carrying out dynamic switching matched forming through the transposition switching of a forming transposition mechanism, thereby realizing continuous forming in a phase-changing manner, greatly improving the processing forming efficiency and avoiding the trouble of transferring and conveying processed parts among the plurality of single-process dies in the traditional mode.

2. The invention provides metal gasket stamping forming equipment for fasteners, which is provided with a material guide frame, wherein the material guide frame can be well matched with material sheet conveying, and the material sheet can be accurately positioned and conveyed, so that the subsequent metal gasket stamping forming equipment is convenient to useAccurateAnd (5) trimming, processing and forming.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of a metal gasket punching-processing forming device for a fastener provided by the invention at one viewing angle.

Fig. 2 is a schematic perspective view of a metal gasket punching-processing forming device for a fastener provided by the invention from another perspective.

Fig. 3 is a front view of a metal gasket press forming apparatus for a fastener according to the present invention.

Fig. 4 is a side view of a metal gasket press forming apparatus for a fastener according to the present invention.

Fig. 5 is a schematic perspective view of the material guiding and returning mechanism and an assembly structure of the lower die device on the forming table from a viewing angle.

Fig. 6 is a schematic perspective view of the material guiding and discharging mechanism and an assembling structure of the lower die device on the forming table from another view angle.

Fig. 7 is a partially enlarged schematic view at a in fig. 6.

FIG. 8 is a top view of an assembly structure of the material guiding and returning mechanism, the lower die device, the first flanging die assembly and the second flanging die assembly on the forming workbench.

Fig. 9 is a sectional view of B-B in fig. 8.

Fig. 10 is a perspective view of an assembly structure of the punch blanking device and the hemming die device on the forming shift mechanism.

Fig. 11 is a schematic perspective view of the assembly structure of the punch blanking device and the partially-structured shifting frame.

FIG. 12 is a perspective view of the flanging dies and the assembly structure of the partially-structured indexing movable frame.

Fig. 13 is a schematic structural view of a metal gasket formed by the metal gasket press forming apparatus for a fastener according to the present invention.

In the figure: 1. a forming workbench; 11. a female die window; 2. a material guiding and returning mechanism; 21. a material guiding frame; 211. side edge blocking strips; 212. positioning the barrier strip; 213. aligning the flat plate; 214. a position avoiding window; 215. a material returning sliding plate; 22. a material returning component; 221. a material returning cylinder; 222. a material returning plate; 3. a lower die device; 31. a lower die lifting assembly; 311. a lifting cylinder; 312. a lifting plate; 3121. supporting a vertical plate of the mold; 313. a lifting guide post; 32. a lower module; 321. a central module; 3211. a circular hole female die; 322. a first edge module; 323. a second edge module; 324. trimming the female die; 33. a side form lifting assembly; 331. a position retreating cylinder; 332. a cross plate; 4. a molding transposition mechanism; 41. a transposition guide frame; 411. a support frame; 412. a horizontal guide rod; 413. a side plate; 4131. a stroke limiting hole; 42. a transposition moving frame; 43. a push-pull rod; 44. a push-pull transposition air cylinder; 5. a male die blanking device; 51. punching a cylinder; 52. a mold base plate; 521. a buffer block; 53. a circular hole male die; 54. trimming the male die; 55. a vertical guide post; 56. material pressing window plates; 57. a buffer spring; 58. hanging plates; 59. a first guide rod; 6. a flanging die assembly; 61. pressing down the air cylinder; 62. an upper supporting plate; 63. supporting and hanging the guide post; 631. hanging edges by using a circular ring; 64. folding and pressing the module; 641. positioning the convex circle; 65. a back spring; 66. a second guide rod; 7. a first flanging die assembly; 71. a first flanging cylinder; 72. a first flanging die; 8. a second flanging die assembly; 81. a second flanging cylinder; 82. and a second flanging die.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

The specific structure of the work piece metal shim in this embodiment is shown in fig. 13.

As shown in fig. 1, 2, 3, 4 and 9, a metal gasket punching forming device for fasteners comprises a forming workbench 1, wherein a rectangular die window 11 is arranged on the table top of the forming workbench 1, and the upper end edge of the die window 11 is a trimming knife edge; the bottom end of the table top of the forming workbench 1 is provided with a lower die device 3 and a material guiding and returning mechanism 2 matched and assembled with the lower die device 3; the upper end of the table top of the forming workbench 1 is provided with a forming transposition mechanism 4, and a male die blanking device 5 and a flanging die assembly 6 are assembled on the forming transposition mechanism 4; be equipped with on the shaping work platform 1 with two hemming die assembly 7 and two hemming die assembly 8 of the cooperation setting of hem die assembly 6, two hemming die assembly 7 one-to-ones set up in die window 11 wherein two relative position's window limit department and symmetry set up, two hemming die assembly 8 one-to-ones set up in die window 11 other two relative position's window limit department and symmetry set up.

As shown in fig. 3, 5, 6, 8 and 9, the lower mold device 3 includes a lower mold lifting assembly 31 assembled below the surface of the forming table 1, a lower mold block 32 is horizontally and fixedly installed at a lifting end of the lower mold lifting assembly 31, the lower mold block 32 is disposed in cooperation with the die window 11, and the lower mold block 32 can pass through the die window 11 upward when the lower mold lifting assembly 31 is lifted; lower module 32 is including being the central module 321 that rectangular structure and relative die window 11 set up between two parties, central module 321 wherein two lateral wall ends are provided with side module 322 No. relatively, two other lateral wall ends of central module 321 are provided with side module 323 No. two relatively, side module 322 and side module 323 all vertically inlay slidable mounting on central module 321, the lifting end of lower mould lifting subassembly 31 still is equipped with drives side module 322 and side module 323 synchronous lifting sliding's side module lifting subassembly 33 No. one, when side module lifting subassembly 33 drives side module 322 and side module 323 No. two and rises to the highest position, the up end of side module 322 and the up end of side module 323 No. two all level with the up end of central module 321. The lower die lifting assembly 31 comprises two lifting cylinders 311 vertically fixed at the lower position of the table top of the forming workbench 1 through bolts, a lifting plate 312 is fixedly mounted between the output ends of the two lifting cylinders 311 through bolts, two lifting guide pillars 313 are vertically and fixedly mounted at the bottom end of the table top of the forming workbench 1 through bolts, the lifting plate 312 is vertically and slidably mounted on the two lifting guide pillars 313, two supporting die vertical plates 3121 are arranged at the top end of the lifting plate 312, and the bottom end of the central module 321 is horizontally and fixedly mounted at the top end positions of the two supporting die vertical plates 3121 through bolts; side forms lifting unit 33 includes that the cylinder 331 that moves back that passes through the vertical fixed mounting of bolt in lifter plate 312 bottom and fix the cross plate 332 at the cylinder 331 output that moves back through the bolt level, and the bottom of a side module 322 and the bottom of No. two side modules 323 are all through bolt fixed connection on cross plate 332.

As shown in fig. 5, 6, 7 and 9, the material guiding and returning mechanism 2 includes a material guiding frame 21 fixedly mounted at the bottom end of the table top of the forming table 1 through bolts for guiding and positioning the material feeding; the material guiding frame 21 is positioned right below the female die window 11, and the lower module 32 can penetrate through the material guiding frame 21 upwards; the material guiding and returning mechanism 2 further comprises a material returning assembly 22 which is assembled at the bottom end of the table top of the forming workbench 1 and used for returning the machined and formed metal gasket. The material guiding frame 21 comprises two side edge barriers 211 which are fixedly connected to the bottom end of the table top of the forming workbench 1 through bolts and are arranged along two window edges at opposite positions of the female die window 11 in a one-to-one correspondence manner, a positioning edge barrier 212 is fixedly connected between the two side edge barriers 211, the positioning edge barrier 212 is arranged in alignment with one of the window edges adjacent to the two side edge barriers 211 on the female die window 11, an alignment flat plate 213 is horizontally and fixedly connected between the bottom ends of the two side edge barriers 211, a material returning sliding plate 215 is further connected between the bottom ends of the two side edge barriers 211, the material returning sliding plate 215 is connected with one end, far away from the female die window 11, of the alignment flat plate 213, the material returning sliding plate 215 inclines from top to bottom in a direction far away from the female die window 11, and the two side edge barriers 211, the positioning edge barrier 212 and the alignment flat plate 213 enclose a position avoiding window 214 for avoiding the lower die block 32, and in the embodiment, the whole material guiding frame 21 is integrally formed; when the lower block 32 is at the lowest position, the upper end surface of the lower block 32 is flush with the inner end surface of the alignment flat plate 213.

The device adopts the metal material in the form of the material sheet for forming processing, namely the material belt for forming processing needs to be cut into the material sheets with corresponding sizes in advance, and in order to save material cost and reduce waste, the size of the material sheets is the same as that of a rectangular plane which is formed by flatly spreading and unfolding the gasket and is completed into a rectangle as shown in figure 13.

During molding, the feeding of the material sheets can be manually carried out, or the material sheets can be grabbed and fed by an existing industrial manipulator, wherein during feeding, the lower module 32 is at the lowest height position, and the upper end surface of the lower module 32 is flush with the inner end surface of the alignment flat plate 213; during feeding, the material sheet is straightened, the material sheet penetrates into the material guide frame 21 from one end of the material returning sliding plate 215, the aligning flat plate 213 can provide horizontal guide, the material sheet can be horizontally fed by being attached to the aligning flat plate 213, meanwhile, the side edge blocking strips 211 on two sides can form side blocking guide for the edge of the material sheet, so that the material sheet is always in a straightening state, namely, the edge position where the material sheet is attached to the side edge blocking strips 211 can be aligned with two side edges of the edge of the upper end of the female die window 11, along with pushing and feeding, the front end of the material sheet finally contacts with the positioning edge blocking strips 212, namely, the positioning edge blocking strips 212 can finally position the material sheet, the material sheet is finally positioned in the window range of the female die window 11 and is flatly placed on the upper end face of the lower die block 32, and feeding operation of the material sheet is completed.

As shown in fig. 2 and 10, the forming transposition mechanism 4 includes a transposition moving frame 42 moving along a horizontal straight line, the forming transposition mechanism 4 further includes a transposition guide frame 41 disposed on the table top of the forming table 1, the transposition guide frame 41 includes two support frames 411 disposed in parallel and fixed on the table top of the forming table 1 through bolts, two horizontal guide rods 412 are horizontally welded between the two support frames 411, two side plates 413 are horizontally welded between the two support frames 411, and the two horizontal guide rods 412 are located between the two side plates 413; the outer side walls of the two side plates 413 are fixedly provided with push-pull transposition cylinders 44 in a one-to-one correspondence mode through fixing plates, the side plates 413 are provided with stroke limiting holes 4131 used for stroke guiding and limiting, the transposition moving frame 42 is horizontally and slidably arranged on the two horizontal guide rods 412, the push-pull rod 43 is horizontally welded on the transposition moving frame 42, and the push-pull rod 43 penetrates through the two stroke limiting holes 4131 and is fixed between the output ends of the two push-pull transposition cylinders 44 through bolts. The male die blanking device 5 and the flanging die pressing device 6 are assembled on the transposition moving frame 42; the transposition moving frame 42 drives the male die blanking device 5 and the flanging die assembly 6 to synchronously move and transpose, so that the male die blanking device 5 or the flanging die assembly 6 is vertically aligned with the lower die block 32.

In the forming process, after the material sheet is fed in place, the trimming, punching and flanging operations need to be completed successively, so that the position switching of the male die punching device 5 and the flanging die assembly 6 needs to be completed through the forming transposition mechanism 4, specifically, the two push-pull transposition cylinders 44 are started synchronously to drive the push-pull rod 43 to slide between the two stroke limiting holes 4131, so as to drive the transposition moving frame 42 to slide on the two horizontal guide rods 412, and then drive the male die punching device 5 and the flanging die assembly 6 to integrally horizontally move to switch the horizontal position, so that when the trimming and punching operations are performed, the male die punching device 5 can be positioned right above the lower die block 32 to realize vertical alignment, and when the flanging die assembly 6 is positioned right above the lower die block 32 to realize vertical alignment.

As shown in fig. 8, 10 and 11, the punch blanking device 5 includes a punching cylinder 51 vertically fixed at the top end of the transposition moving frame 42 through a bolt, a die holder plate 52 is horizontally and fixedly mounted at an output end of the punching cylinder 51 through a bolt, two first guide rods 59 vertically and slidably engaged with the transposition moving frame 42 are fixedly mounted on the die holder plate 52 through bolts, a circular hole punch 53 and four trimming punches 54 are fixedly mounted on a bottom end face of the die holder plate 52 through bolts, and the four trimming punches 54 are distributed around the circular hole punch 53 in a rectangular vertex; four vertical guide posts 55 are vertically and slidably arranged on the die holder plate 52 in a matching manner, a material pressing window plate 56 is horizontally and fixedly arranged between the bottoms of the four vertical guide posts 55 through bolts, four L-shaped hanging plates 58 are fixedly arranged on the material pressing window plate 56 through bolts in an inverted manner, the horizontal plate part of each hanging plate 58 is in suspension contact with the top end surface of the die holder plate 52, a buffer block 521 made of rubber is arranged at the contact part of the die holder plate 52 and the hanging plates 58, the buffer block can provide buffer in the actual rapid blanking process, a buffer spring 57 is sleeved on each vertical guide post 55, and two ends of each buffer spring 57 are respectively in contact with the bottom end surface of the die holder plate 52 and the upper end surface of the material pressing window plate 56; a circular hole female die 3211 is correspondingly matched with the circular hole male die 53 on the central module 321; the lower module 32 and the die window 11 together form four trimming dies 324 which are arranged corresponding to the four trimming dies 54 one by one; when the upper end face of the lower module 32 is flush with the upper end face of the table top of the forming workbench 1, the four trimming female dies 324 are distributed at the positions of the four through holes defined by the center module 321, the first side module 322, the second side module 323 and the female die window 11 in a one-to-one correspondence manner, and it should be noted that since the trimming female dies 324 are formed by combining the center module 321, the first side module 322, the second side module 323 and the female die window 11 in a surrounding manner, the precision of processing and assembling parts needs to be ensured.

When trimming and punching are performed, firstly, the two lifting cylinders 311 are started simultaneously and drive the lifting plate 312 to ascend, at the moment, the lifting cylinders 311 start a first section of ascending stroke, so that the lower module 32 penetrates into the female die window 11, the upper end face of the lower module 32 is flush with the upper end of the table top of the forming workbench 1, at the moment, the trimming female die 324 is assembled, the material sheet is lifted synchronously along with the lower module 32, then, under the driving of the forming transposition mechanism 4, the male die punching device 5 is moved to a position which is aligned with the lower module 32 up and down, then, the stamping cylinder 51 is started to drive the lower end structure connected with the output end of the stamping cylinder 51 to descend integrally, along with descending, the pressing window plate 56 is firstly contacted with the material sheet, along with continuing descending, the pressing window plate 56 compresses the material sheet, the four buffer springs 57 are compressed synchronously, the circular hole male die 53 and the trimming male die 54 are synchronously exposed from the window of the male die window plate 56, and the circular hole 53 is matched with the female die 3211 to complete circular hole punching forming, and trimming and the processing of the female die 324; after finishing the trimming and punching process, the output end of the punching cylinder 51 will be lifted upwards, the round-hole male die 53 and the trimming male die 54 will firstly return upwards, then the pressure of the material pressing window plate 56 is gradually reduced and finally separated from the material sheet, and the whole male die blanking device 5 will be restored to the initial height.

As shown in fig. 10 and 12, the hemming die assembly 6 includes a pressing cylinder 61 vertically and fixedly mounted on the top end of the transposition moving frame 42 through a bolt, an upper supporting plate 62 is horizontally and fixedly mounted on an output end of the pressing cylinder 61 through a bolt, two guide rods 66 vertically and slidably engaged with the transposition moving frame 42 are vertically and fixedly mounted on the top end of the upper supporting plate 62 through a bolt, four supporting and hanging guide posts 63 are vertically and slidably mounted on the upper supporting plate 62, a circular hanging edge 631 contacting with the upper end face of the upper supporting plate 62 is provided on the supporting and hanging guide posts 63, the circular hanging edge 631 has the same effect as that of the hanging plate 58, a hemming die block 64 is horizontally and fixedly mounted between the bottom ends of the four supporting and hanging guide posts 63 through a bolt, a withdrawing spring 65 is sleeved on the supporting and hanging guide posts 63, two ends of the withdrawing spring 65 respectively contact with the upper end faces of the upper supporting plate 62 and the upper end face of the hemming die block 64, and a positioning convex circle 641 is provided at the bottom end of the hemming die block 64.

As shown in fig. 1, fig. 2 and fig. 8, the first hemming die assembly 7 includes a first hemming die 72 which is driven to be disposed along the extending direction of two opposite window edges of the female die window 11, and further includes a first hemming cylinder 71 which is horizontally and fixedly mounted on the table top of the forming workbench 1 through bolts, and the first hemming die 72 is fixed at the output end of the first hemming cylinder 71; the second flanging die assembly 8 comprises a second flanging die 82 which is arranged along the extending direction of the other two opposite window edges of the female die window 11 in a driving manner, and further comprises a second flanging cylinder 81 which is horizontally fixed on the table top of the forming workbench 1 through bolts, wherein the second flanging die 82 is fixed at the output end of the second flanging cylinder 81; the hemming die block 64 is of a cubic structure, two first hemming dies 72 are correspondingly arranged on two opposite side wall ends of the hemming die block 64 in a one-to-one matching manner, and two second hemming dies 82 are correspondingly arranged on the other two opposite side wall ends of the hemming die block 64 in a one-to-one matching manner.

After trimming and punching are completed, a hemming molding operation can be performed, when hemming molding processing is performed, firstly, the hemming die assembly 6 is driven to move to a position aligned with the lower die block 32 up and down through the molding transposition mechanism 4, then, the pressing cylinder 61 is started, the pressing cylinder 61 drives the lower end structure connected with the output end of the pressing cylinder to integrally descend, along with descending, the positioning convex circle 641 firstly penetrates through a circular hole punched in a trimmed and punched material sheet, the bottom end of the positioning convex circle 641 partially extends into the circular hole concave die 3211, in the embodiment, the lower edge of the positioning convex circle 641 is subjected to circular chamfering treatment, the positioning convex circle 641 conveniently extends into the circular hole concave die 3211 to realize center positioning of the material sheet, meanwhile, the edge of the circular hole concave die 3211 cannot be damaged, the hemming die block 64 is pressed on the material sheet, then, the two lifting cylinders 311 start a second lifting stroke to continuously drive the lower die block 32 to ascend by a section, the hemming die block 64 is located at a position matched with the first hemming die 72 and the second hemming die 82, and the second folding die block 331 is located at a position matched with the final hemming die block 321, and is driven to descend by the first pressing cylinder 332, and the second cross die block 321, and the final cross plate 321 is driven to descend by the first pressing block 332. Finally, the first hemming cylinder 71 pushes the first hemming die 72 to approach the hemming die 64, and meanwhile, the second hemming cylinder 81 pushes the second hemming die 82 to approach the hemming die 64, so that the hemming forming of the surrounding hemming structure in the gasket shown in fig. 13 is completed under the matching of the hemming die 64, after the hemming forming is completed, the height positions of the lower die 32 and the hemming die 64 are kept unchanged, and after the first hemming die 72 and the second hemming die 82 return, the secondary hemming shaping is performed, so that the secondary bending shaping operation can be completed after the primary bending forming, and the final state of the gasket is ensured.

As shown in fig. 6, 7 and 9, the material returning assembly 22 comprises a material returning cylinder 221 horizontally fixed at the bottom end of the table top of the forming table 1 through bolts and a material returning plate 222 fixedly connected at the output end of the material returning cylinder 221 through bolts; a gap is reserved between the two side edge retaining strips 211 and the positioning edge retaining strip 212 as well as the bottom end of the table top of the forming table 1, and when the material returning cylinder 221 pushes the material returning plate 222 horizontally, the material returning plate 222 horizontally passes through the gap along the length direction of the side edge retaining strips 211.

After the final forming of the gasket is completed, the lower module 32 will drive the formed gasket to descend to the lowest height position, and when the gasket is located at the lowest height position, the upper end surface of the lower module 32 is just flush with the inner end surface of the alignment flat plate 213, it should be noted that the design distance between the inner end surface of the alignment flat plate 213 and the bottom end of the table top of the forming workbench 1 is greater than the overall height of the formed gasket, and meanwhile, the hemming die assembly 6 will ascend and reset. Subsequently, the material returning cylinder 221 can be started, so that the material returning cylinder 221 drives the material returning plate 222 to horizontally pass through the material guiding frame 21, and in the process of passing through, the material returning plate 222 pushes the formed gasket to slide out along the material returning slide plate 215.

The equipment changes the traditional step-by-step forming mode of combining a plurality of single-process dies, designs the deformation of the lower die device 3 into a design mode capable of carrying out structural deformation according to the processing procedures, and converts the transposition switching of the punch blanking device 5 and the flanging die pressing device 6 which are matched with the lower die device 3 for forming into a mode capable of carrying out dynamic switching and matching forming through the forming transposition mechanism 4, so that the continuous processing and forming can be realized in a phase-changing manner, the processing and forming efficiency is greatly improved, and the trouble that the processed parts need to be transferred and conveyed among the plurality of single-process dies in the traditional mode is avoided.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention, and are not described herein.

The above description is that of the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, in which devices and structures not described in detail are understood to be implemented in a manner that is conventional in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention, unless the technical essence of the present invention is not departed from the content of the technical solution of the present invention.

Claims

1. The utility model provides a metal gasket punching press processing former for fastener which characterized in that: the die window forming device comprises a forming workbench (1), wherein a rectangular die window (11) is arranged on the table top of the forming workbench (1), and the edge of the upper end of the die window (11) is a trimming knife edge; a lower die device (3) and a material guiding and returning mechanism (2) which is matched and assembled with the lower die device (3) are assembled at the bottom end of the table top of the forming workbench (1); a forming transposition mechanism (4) is arranged at the upper end of the table top of the forming workbench (1), and a male die blanking device (5) and a flanging die pressing device (6) are assembled on the forming transposition mechanism (4); two first flanging die assemblies (7) and two second flanging die assemblies (8) which are matched with the flanging die assembly (6) are assembled on the forming workbench (1), the two first flanging die assemblies (7) are correspondingly arranged at the window edges of two opposite positions in the female die window (11) one by one and are symmetrically arranged, and the two second flanging die assemblies (8) are correspondingly arranged at the window edges of the other two opposite positions in the female die window (11) one by one and are symmetrically arranged; wherein:

the lower die device (3) comprises a lower die lifting assembly (31) assembled below the table top of the forming workbench (1), a lower die block (32) is horizontally and fixedly installed at the lifting end of the lower die lifting assembly (31), the lower die block (32) is matched with the die window (11), and the lower die block (32) can penetrate upwards through the die window (11) under the lifting of the lower die lifting assembly (31); lower module (32) is including being the rectangle structure and relative die window (11) center module (321) that set up between two parties, center module (321) wherein two lateral wall ends are provided with side module (322) relatively, two other lateral wall ends of center module (321) are provided with side module (323) relatively, side module (322) and the equal vertical slidable mounting that inlays of side module (323) on center module (321), the lifting end of lower mould lifting subassembly (31) still is equipped with the drive side module (322) and No. two side module (323) synchronous lifting sliding's side mould lifting unit (33), works as side mould lifting unit (33) drive side module (322) and No. two side module (323) rise when the highest position, the up end of side module (322) and the up end of No. two side module (323) all with the up end of center module (321) flushes.

2. The metal gasket press working apparatus for fasteners as claimed in claim 1, wherein: the forming transposition mechanism (4) comprises a transposition moving frame (42) which moves along a horizontal straight line, and the male die blanking device (5) and the flanging die assembly (6) are assembled on the transposition moving frame (42); the transposition moving frame (42) drives the male die blanking device (5) and the flanging die assembly (6) to synchronously move and transpose, so that the male die blanking device (5) or the flanging die assembly (6) is vertically aligned with the lower module (32).

3. The metal gasket press forming apparatus for fasteners as set forth in claim 2, wherein: the punch blanking device (5) comprises a stamping cylinder (51) vertically fixed at the top end of the transposition movable frame (42), the output end of the stamping cylinder (51) is horizontally and fixedly provided with a die seat plate (52), the bottom end face of the die seat plate (52) is fixedly provided with a round hole punch (53) and four trimming punches (54), and the four trimming punches (54) are distributed around the round hole punch (53) in a rectangular peak; a plurality of vertical guide posts (55) are vertically and slidably mounted on the die base plate (52), a material pressing window plate (56) is horizontally and fixedly mounted between the bottoms of the vertical guide posts (55), a plurality of L-shaped hanging plates (58) are fixedly mounted on the material pressing window plate (56) in an inverted mode, the horizontal plate part of each hanging plate (58) is in hanging contact with the top end face of the die base plate (52), a buffer spring (57) is sleeved on each vertical guide post (55), and two ends of each buffer spring (57) are respectively in contact with the bottom end face of the die base plate (52) and the upper end face of the material pressing window plate (56); a circular hole female die (3211) is correspondingly matched with the circular hole male die (53) on the central module (321); the lower module (32) and the die window (11) jointly form four trimming female dies (324) which are arranged corresponding to the four trimming male dies (54) one by one.

4. The metal gasket press forming apparatus for fasteners as set forth in claim 2, wherein: hem die assembly (6) include vertical fixed mounting move frame (42) top push down cylinder (61) down, the horizontal fixed mounting of output of pushing down cylinder (61) has cope match-plate pattern (62), vertical slidable mounting has a plurality of supports to hang guide pillar (63) on cope match-plate pattern (62), support hang be provided with on guide pillar (63) with the ring string limit (631) of upper end face contact of cope match-plate pattern (62), it is a plurality of support and hang common horizontal fixed mounting between guide pillar (63) bottom and have hem pressure module (64), support and hang the cover and be equipped with back position spring (65) on guide pillar (63), back position spring (65) both ends respectively with cope match-plate pattern (62) bottom face and hem pressure module (64) up end face contact, the bottom of hem pressure module (64) is provided with location protruding circle (641).

5. The metal gasket press forming apparatus for fasteners as set forth in claim 1, wherein: the lower die lifting assembly (31) comprises a plurality of lifting cylinders (311) which are vertically fixed at the position below the table top of the forming workbench (1), lifting plates (312) are jointly and fixedly installed among output ends of the plurality of lifting cylinders (311), a plurality of die supporting vertical plates (3121) are arranged at the top ends of the lifting plates (312), and the bottom end of the central module (321) is horizontally and fixedly installed at the top ends of the plurality of die supporting vertical plates (3121); the side die lifting assembly (33) comprises a withdrawing cylinder (331) vertically and fixedly mounted at the bottom end of the lifting plate (312) and a cross plate (332) horizontally fixed at the output end of the withdrawing cylinder (331), and the bottom end of the first side module (322) and the bottom end of the second side module (323) are fixedly connected to the cross plate (332).

6. The metal gasket press forming apparatus for fasteners as set forth in claim 1, wherein: the material guiding and returning mechanism (2) comprises a material guiding frame (21) which is fixedly arranged at the bottom end of the table top of the forming workbench (1) and used for feeding, guiding and positioning material sheets; the guide frame (21) is positioned right below the die window (11), and the lower module (32) can penetrate through the guide frame (21) upwards; the material guiding and returning mechanism (2) further comprises a material returning assembly (22) which is assembled at the bottom end of the table top of the forming workbench (1) and used for returning the machined and formed metal gasket.

7. The metal gasket press forming apparatus for fasteners as set forth in claim 6, wherein: the guide frame (21) comprises two side edge retaining strips (211) which are fixedly connected to the bottom end of the table top of the forming workbench (1) and are arranged along the window edges of two opposite positions of the female die window (11) in a one-to-one correspondence manner, a positioning edge retaining strip (212) is fixedly connected between the two side edge retaining strips (211), the positioning edge retaining strip (212) is arranged in an alignment manner relative to one of the window edges on the female die window, which is adjacent to the two side edge retaining strips (211), an alignment flat plate (213) is horizontally and fixedly connected between the bottom ends of the two side edge retaining strips (211), and the two side edge retaining strips (211), the positioning edge retaining strip (212) and the alignment flat plate (213) enclose an avoiding window (214) for lifting and avoiding the lower die block (32); when the lower module (32) is at the lowest position, the upper end face of the lower module (32) is flush with the inner end face of the alignment plate (213).

8. The metal gasket press forming apparatus for fasteners as set forth in claim 7, wherein: the material returning assembly (22) comprises a material returning cylinder (221) horizontally fixed at the bottom end of the table top of the forming workbench (1) and a material returning plate (222) fixedly connected to the output end of the material returning cylinder (221); and a pore is reserved between the two side edge retaining strips (211), the positioning retaining strip (212) and the bottom end of the table top of the forming workbench (1), and when the material returning cylinder (221) horizontally pushes the material returning plate (222), the material returning plate (222) horizontally penetrates through the pore along the length direction of the side edge retaining strips (211).

9. The metal gasket press forming apparatus for fasteners as set forth in claim 4, wherein: the first flanging die assembly (7) comprises a first flanging die (72) which is arranged along the extending direction of two opposite window edges in the female die window (11) in a driving way; the second flanging die assembly (8) comprises a second flanging die (82) which is arranged along the extending direction of the other two opposite window edges of the female die window (11) in a driving way; the hemming pressing module (64) is of a cubic structure, the two first hemming dies (72) and the hemming pressing module (64) are correspondingly arranged at two opposite side wall ends one by one, and the two second hemming dies (82) and the other two opposite side wall ends of the hemming pressing module (64) are correspondingly arranged one by one.